Measurements of pile driving noise from control piles and noise-reduced piles at the Vashon Island ferry dock.

Details

• Creators:
  Dahl, Peter H. ; Dall'Osto, David R. ; Laughlin, Jim
• Corporate Creators:
  Washington State Transportation Center
• Corporate Contributors:
  Washington (State). Dept. of Transportation. Research Office ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Noise control
  • Pile driving
  • Docks
  • Noise
  • Underwater sound
  • Piles (Supports)
  • Piers (Supports)
  • Impact pile driving
  • underwater sound
  • sound
  More +
• Publication/ Report Number:
  WA-RD 861.2
• Resource Type:
  Tech Report
• Geographical Coverage:
  Washington ; United States
• Corporate Publisher:
  Washington (State). Dept. of Transportation. Office of Research and Library Services
• Abstract:
  As part of the Washington State Department of Transportation (WSDOT) pile attenuation test program, ; researchers from the University of Washington Applied Physics Laboratory (APL-UW) conducted underwater sound ; measurements on 7 and 8 December 2015 at the Vashon Island ferry dock. A WSDOT team operating closer to the ; construction barge also took measurements. The goals of the APL-UW team were to measure the underwater sound ; field over nearly the entire water column and away from interfering structures, as well as to make robust estimates of ; sound mitigation performance of two test pile designs in terms of sound exposure level (SEL) and peak pressure. ; Measurements on the R/V Robertson were taken at a range of 120 m from the construction barge complex and pile ; source location and at a water depth 12.5 m by using a vertical line array (VLA) that spanned 1.25 to 9.25 m in depth. ; A comparison of the 7 December measurements from the double wall test pile with the control pile showed reductions ; in peak pressure (8.7–13.5 dB), RMS pressure (8.8–12.7 dB), and SEL (7–10.3 dB). A comparison of the 8 December ; measurements from the mandrel test pile with the 7 December measurements from the control pile showed reductions ; in peak pressure (11.4–14 dB), RMS pressure (10.8–12.6 dB), and SEL (9.3 and 11.1 dB). The reduction in peak ; pressure generally increased as measurement depth on the VLA increased; for the RMS and SEL metrics, no trend ; was observed.
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• Format:
  PDF
• Funding:
  Agreement T1461, Task 25
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/32262/dot_32262_DS1.pdf
• File Type:
  [PDF - 2.53 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:ee18b74530e17f7bdac0d7a96b9eaf62d5c6879ce8e2cb748b053126e18a65c9